Additionally I don’t want to dip into my personal primary residence rainy day fund.

Heres the scenario:Married - Husband owns 2 properties (1 long term and 1 short term) and wife owns 2 properties (1 long term and primary residence)  in each of their own names.Husband has LLC with zero properties.

There are exceptions, like what was mentioned by @Nathan Gesner, if you are an employee of the property owners, and you exclusively manage their properties, if you're a resident manager, living in the building that is being managed, or if you are someone who manages properties owned by a single entity and have a direct ownership interest in it.

Based on what you shared, your current residence is already a great jump start to building wealth.

AND you’ll need to be living in the home as your primary residence WHILE it’s rented out. 

Investment Info:Single-family residence buy & hold investment.

Investment Info:Single-family residence buy & hold investment.

Love the idea of helping out a first time buyer, may run into trouble if she's not the primary resident, check w/ lender but I don't think that'll fly w/o more of a down payment.

You might also want to double-check if having a local property manager satisfies the city’s requirements or if the operator still needs to meet the residency rule.Good luck with your Airbnb arbitrage—Cincinnati can be a great market! 

From talking to locals, there's a couple of issues than need to be addressed, some are the non-ecological practices that some of those developers have, unfortunately, our government profits from this investors and allows them to destroy manglers (which are the natural water purifying system of that area) dismantling hectares of mangroves and degraded the habitat of resident and migratory species burying animals alive.There's proof of fecal material floating beneath the city of Tulum, only 20% of the water is sent to the water treatment plant, there's no infrastructure for the exponential growth.The landfills in the middle of the jungle that is leaking hazardous pollutants into the freshwater system and that something that developers won't tell you.I love my country and it would be a disaster for everybody if this place ends up like some other great beaches around the world, that are completely ruined by greedy investors not following the rules.There's no urban or comprehensive master plan, and one of the risks is that Tulum will be like Playa del Carmen is today, overgrown and with environmental devastation.I will advise doing a lot of research before getting something in Tulum, different country, different rules, and practices.